[When]条件：`ansible_os_family`列出
示例
常用的
时间：ansible_os_family==“CentOS”
什么时候：ansible_os_family==“Redhat”
什么时候：ansible_os_family==“达尔文”
时间：ansible_os_family==“Debian”
时间：ansible_os_family==“Windows”
所有清单
基于此处的讨论http://comments.gmane.org/gmane.comp.sysutils.ansible/4685
OS_FAMILY = dict(
RedHat = 'RedHat',
Fedora = 'RedHat',
CentOS = 'RedHat',
Scientific = 'RedHat',
SLC = 'RedHat',
Ascendos = 'RedHat',
CloudLinux = 'RedHat',
PSBM = 'RedHat',
OracleLinux = 'RedHat',
OVS = 'RedHat',
OEL = 'RedHat',
Amazon = 'RedHat',
XenServer = 'RedHat',
Ubuntu = 'Debian',
Debian = 'Debian',
SLES = 'Suse',
SLED = 'Suse',
OpenSuSE = 'Suse',
SuSE = 'Suse',
Gentoo = 'Gentoo',
Archlinux = 'Archlinux',
Mandriva = 'Mandrake',
Mandrake = 'Mandrake',
Solaris = 'Solaris',
Nexenta = 'Solaris',
OmniOS = 'Solaris',
OpenIndiana = 'Solaris',
SmartOS = 'Solaris',
AIX = 'AIX',
Alpine = 'Alpine',
MacOSX = 'Darwin',
FreeBSD = 'FreeBSD',
HPUX = 'HP-UX'
)